This type of Rolling Door Opener can be operated by electricity and manual,precise limit by limiter controller automatically. can be operated by manual when out of power,low noise,over heart protection.can lift the Rolling Door Opener automatically by motors.

This
type of rolling shutter door operator/ rolling shutter operator can be operated
by electricity and manual,precise limit by limiter controller automatically.
can be operated by manual when out of power,low noise,over heart protection.
can lift the chain drive rolling shutter operator automatically by motors.

Safety brake,accurate limited
control positioning,with double limit switch protection, prevent door over
roll-up.
UPS automatic system is
available,No bother of power failure. Can work with remote
controller
Easy to install, easy to
maintenance and long useful life.